From Lake to Intake Cribs to Tunnel and Purification Plants to Tunnel to Pump Stations to Pipe Network then Use and Collection to Interceptors -(and/or Tunnels) to Reclamation and River discharge to downstream value (but not to Lake) Water Infrastructure Path
Chicago Sewer: Wet Weather Operation
17’ BRANCH TUNNEL MEETS 27’ MAIN TUNNEL Courtesy of MWRDGC
Thornton Reservoir (2004)
Short Story 3 Managing Stormwater
Distributed vs Discrete Responsibilities Who are you going to call? STORM POTABLE RECLAMATION Everyone has a role in managing stormwater
Ability to influence project outcome concept planning design construction Cost to influence project outcome
Stormwater Management Strategies
2D Release Rates
Example CSO Data Assuming TARP unavailable Outfall Street Pipe Size Invert Control Elevation Level Monitor 2yr CSO Volume_MG Smallest Storm for CSO 154 Normal Ave. 16 X 12.8 -14.28 -10.85 -1.8 MWRD 23.45 6-month 155 Wallace St. 6 -6.98 0.5 -1.8 NO 0.01 2-year 160 Senour Ave. 3 -0.98 1.5 -2.0 NO 0.34 2-month 163 Throop St. 3 -2.28 0 -2.1 NO 0.00 2-year 165 Loomis St. 3 -1.88 0.9 -2.2 NO 0.79 2-month 166 Laflin St. 15 X 12 -11.78 -9.03 -2.3 MWRD 50.52 2-month 167 Ashland Ave. 5.5 -6.38 0.29 -2.3 NO 0.83 2-month 168 Paulina St. 12 X 12 -3.48 -2.6 -2.3 MWRD 26.96 2-month
frequency intensity Current Level of Service (LOS): We provide a level of service for most storms. However, we do allow a number of WOS and WIB. Current LOS
frequency intensity Climate Change: Climate change is going to shift the intensity of storms to the right.
Where should the bar be? frequency intensity Innovation INVESTMENT: Indicates the level of innovation (knowledge, ordinances, GI, etc.) needed to reverse aging infrastructure, manage changes in storm intensity and maintain the same level of service.